(function(doc, win) {
	var htmlFont = function() {
		var docEl = doc.documentElement,
			l = docEl.clientWidth,
			f;
		f = l / 7.5;
		l > 750 ? docEl.style.fontSize = 100 + "px" : docEl.style.fontSize = f + "px"
	};
	htmlFont();
	win.addEventListener("resize", htmlFont, false)
})(document, window);